Question

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with steps

Answer 1

Step-by-step explanation:

(x-1)(x-2)(x^2 +1)

= Multiply first 2 terms

(x^2-2x-x-2)(x^2 + 1)

(x^2-3x-2)(x^2 + 1)

Answer 2

Step-by-step explanation:

(x - 1)(x + 1)(x^2 + 1)

There are 4 x's being multiplied.

Thus, x^4-1

(as - 1 × 1 × 1 gives - 1)